Journal of Speech, Language, and Hearing Research, June 2011, Vol. 54:981-994. doi:10.1044/1092-4388(2010/10-0196)
Journal of Speech, Language, and Hearing Research, December 2010, Vol. 53:1472-1477. doi:10.1044/1092-4388(2010/09-0059)
Language, Speech, and Hearing Services in Schools, January 2010, Vol. 41:14-22. doi:10.1044/0161-1461(2009/08-0089)
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